Industrial robot calibration apparatus



FIG. 1 is a perspective view of an industrial robot calibrationapparatus showing our new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a perspective view showing the use status of the industrialrobot calibration apparatus for calibrating the tool center point of anindustrial robot.

The broken line portions in the drawing views are included to showunclaimed subject matter only and form no part of the claimed design.

CLAIM The ornamental design for an industrial robot calibrationapparatus, as shown and described.